The above does look better on paper, but.... still prefer mac OS, works far better than windows and they are just more reliable overall IMO and actual general processes are quicker. I'm sure a load of people will come along and disagree with that, but I wouldn't go back to a windows based machine again (though use them for work). MS continue to get their new launches wrong, 10 looks like the new Vista, and as for 8, well.....
Plus, if you do have other apple devices they just work together perfectly. There are some niggles, but overall the mac system is quicker & slicker, having ran them side-by-side for years.
My last PC was, on paper, far superior than the mac mini I replaced it with, but after 2 years it had become so slow that stitching a panorama together killed it. The mac just processes anything I throw at it (photography wise). The only purpose I can see an advantage for a windows based PC is for serious gaming.